FC dropped from ~8 to 3 ppm overnight. Just rinsed the cartridges and put the m back in. Another dose of bleach and filter back on 24/7. CC is 1 ppm.
Decided to take care of the yellow/brown stains
- Thread starter Texas Spartan
- Start date
Okay. I am getting a little frustrated with the pool. I have been keeping my FC at 8-11 ppm all day and CC is still 1 ppm. CYA is 50 after I cleaned the filter. I am afraid of the stains returning but I could use a little advise on how to proceed please.
Am I dosing enough? Should I take the FC higher or keep it at this level? Will it just take some more time? I'd like to have my kid in the pool this weekend. Is this realistic?
Thanks!
Am I dosing enough? Should I take the FC higher or keep it at this level? Will it just take some more time? I'd like to have my kid in the pool this weekend. Is this realistic?
Thanks!
If the water is already clear, and the only worry is the CC of 1.0, the odds of swimming the weekend are very good. If the water is still cloudy or green then probably no swimming.
FC around 11 should be good enough to get rid of the CC. There are actually several different chemicals that get counted as CC. Some of them break down more quickly than others. Most of them will break down in a day or two. There are one or two that take longer, but they rare.
FC around 11 should be good enough to get rid of the CC. There are actually several different chemicals that get counted as CC. Some of them break down more quickly than others. Most of them will break down in a day or two. There are one or two that take longer, but they rare.
Thanks Jason. Water was cloudy while I cleaned the filters overnight but cleared up by midday. I'll keep the FC at 10 or higher and keep an eye on the CC. The part that caught me off guard with the CC issue leading up to this is my water was clear and every time I went to the pool store they told me my FC and TC were the same #. I guess they weren't actually measuring the CC...
Overnight FC went from 13 to 7. CC still at 1 ppm...
Should I up the FC to shock level? I have been holding FC around 10 all week with no real change to CC and still have major FC drop overnight. Water is crystal clear.
Should I up the FC to shock level? I have been holding FC around 10 all week with no real change to CC and still have major FC drop overnight. Water is crystal clear.
That is not good. Yes, bring FC up to shock level. You might want to add a little more sequestrant before doing that.
Thanks. I have added almost 1/2 a bottle of sequestrant per day this week...at $25/bottle it's getting expensive and yet the plastic drain cover and inlet nozzles are turning yellow again.
Just to document my starting #s today...
FC 7.0
CC 1.0
TA 80-90
CYA 50
CH 420
ph 7.4
I have added 182 oz of 6% bleach to get FC close to 16 per pool calculator and added a little acid to bring ph down to 7.0-7.2.
FC 7.0
CC 1.0
TA 80-90
CYA 50
CH 420
ph 7.4
I have added 182 oz of 6% bleach to get FC close to 16 per pool calculator and added a little acid to bring ph down to 7.0-7.2.
What brand of sequestrant are you using? Some brands of sequestrant consume chlorine fair vigorously.
Jack's Purple Stuff. I started with generic Metal Hold (2 bottles) and switched to Jack's (3 bottles in so far). I used up the last of my stash yesterday. I can go get more if you think it will help still at this point. If you think it can lift some of the stain off the plastic again I am all in but otherwise I know the AA works immediately. The issue is my water seems to be so out of balance that perhaps we deal with that issue first and then come back and address the stains with another AA treatment once my water is completely clean?
My family can swim with stains but not with FC at 17.
As of 10 AM my FC is bumped to 17, ph down to 7.2 and CC at 1.5 after adding the bleach and acid at ~ 9AM.
My family can swim with stains but not with FC at 17.
As of 10 AM my FC is bumped to 17, ph down to 7.2 and CC at 1.5 after adding the bleach and acid at ~ 9AM.
10 AM: FC 17, TC 1.5
11:40 AM: FC 12.5, TC 1ish
It is unbelievably frustrating that my FC level is dropping so fast with CYA at 50 and SWG on 85% (and working fine).
It's not even that sunny today (for Houston).
11:40 AM: FC 12.5, TC 1ish
It is unbelievably frustrating that my FC level is dropping so fast with CYA at 50 and SWG on 85% (and working fine).
It's not even that sunny today (for Houston).
How confident are you that CYA is really 50?
Metal Free tends to use up chlorine, but Jack's Stuff doesn't.
Metal Free tends to use up chlorine, but Jack's Stuff doesn't.
Highly confident. I am a chemical engineer by training so I am probably on the extreme side of being exact with my testing and rinsing. I repeated the test three times just now on a new sample and got 50 each time. I am using the TF100 test kit with the black dot test holding the tube at my waist. At around mark 55 viewing the dot gets iffy but at 50 it is totally obscured and when I go beyond the 50 line there is no change to the visibility in the tube.
I do not measure the bleach so exact but I am erring on the side of bumping FC a bit over shock level but not by much, maybe a few ppm at most.
As for Jack's, I switched to it earlier this week after I cleaned the filter so I now have 96 ounces in the system. Should I add more? At $25 a pop and $40 for AA would I be better off getting my water balanced and then later doing another AA treatment (adding Polyquat this time to keep away algae) to get rid of the staining?
Bleach is affordable and gets us swimming again. I just don't want to dump another $100 into the pool for stains while I am continue to dump in so much chlorine, which could be what is making the plastic yellow. No other stains have reappeared on the plaster, just on the plastic components.
I do not measure the bleach so exact but I am erring on the side of bumping FC a bit over shock level but not by much, maybe a few ppm at most.
As for Jack's, I switched to it earlier this week after I cleaned the filter so I now have 96 ounces in the system. Should I add more? At $25 a pop and $40 for AA would I be better off getting my water balanced and then later doing another AA treatment (adding Polyquat this time to keep away algae) to get rid of the staining?
Bleach is affordable and gets us swimming again. I just don't want to dump another $100 into the pool for stains while I am continue to dump in so much chlorine, which could be what is making the plastic yellow. No other stains have reappeared on the plaster, just on the plastic components.
Testing update:
Between 10 am and 11:40 we went from 17 to 12.5 pp FC and CC held at 1.5. I then shocked with bleach.
At noon FC was 20.5 and CC was 1.0. At 12:30 FC is 18.5 and CC is 1.0.
It appears I am losing FC at a fairly constant rate of 4 ppm per hour while CC bounces around 1.0 to 1.5.
Between 10 am and 11:40 we went from 17 to 12.5 pp FC and CC held at 1.5. I then shocked with bleach.
At noon FC was 20.5 and CC was 1.0. At 12:30 FC is 18.5 and CC is 1.0.
It appears I am losing FC at a fairly constant rate of 4 ppm per hour while CC bounces around 1.0 to 1.5.
I suppose, since you are in Texas, it is likely that your pool is getting a lot of direct sunlight. Your FC loss is more than I would expect most places, but not out of the question for a pool with no shade at all on a nice sunny day.
I'm much more concerned about the overnight FC loss. That doesn't fit with my theory of what should be happening.
The steps can be cleaned up without treating the entire pool. While that is a little more work, it won't cost nearly as much.
You have added enough sequestrant for now.
I'm much more concerned about the overnight FC loss. That doesn't fit with my theory of what should be happening.
The steps can be cleaned up without treating the entire pool. While that is a little more work, it won't cost nearly as much.
You have added enough sequestrant for now.
We have absolutely no shade from 10 AM until dark for our pool so it gets full sun all day. Our patio roof doesn't block the pool. Today is totally overcast. I will post pics at some point.
On a side note, in 3 years up to now I only ever had to add salt and acid. Maybe added conditioner twice. So even with extreme sun I was able to keep things in balance with almost no effort this spring has been a mess so far.
Close to success, maybe ?!
I have white frothy stuff collecting a corner of the pool on the surface (a new development) and while FC still seems to still be dropping my CC is definitely at 0.5 ppm. I want to make sure it stays down so I will post test results again in one hour to see if FC and CC stabilize.
I have white frothy stuff collecting a corner of the pool on the surface (a new development) and while FC still seems to still be dropping my CC is definitely at 0.5 ppm. I want to make sure it stays down so I will post test results again in one hour to see if FC and CC stabilize.
Nope. FC is back down to 12.5 ppm from 18.5 ppm over the past 3 hours. CC back to 1.0.
Okay. I am now really frustrated. My CC is back up to 1.5 ppm. I had my FC all the way up to 28.5 but it is still dropping at 4 ppm per hour. Shouldn't I be seeing some sort of progress by now. I have put over 600 ounces of bleach in my pool in 8 hours and no change to the chemistry but my pool plastic is yellow again. I have obligations tomorrow and work Monday before I leave for a trip until next Sunday. I am in need of a miracle tonight and am ready for extreme measures.
What can I do to break this cycle?
What can I do to break this cycle?